Edge-burnishing machine



(No Model.) I 2 SheetsSheet 1. R. ASHE.

EDGE BURNISHING MACHINE N0. 313 Patented Mar. 3, 1885.

(No Model.) 2 Sheets-Sheet 2. R. ASHE.

EDGE BURNISHING MACHINE.

Patented Mar. 3, 1885 wzfm/enmvr I @MW JIH I n VIE/messes L. 61. Jzqvfl ROBERT ASHE, OF SOMERVILLE, MASSACHUSETTS.

EDGE-BURNlSHING MACHINE.

SPECIFICATION forming part of Letters Patent No. 313,155, dated March 3, 1885.

Appfication filed Ociober27,1884. (No model.)

To aZZ whom it may concern:

Be it known that 1, ROBERT Asnn, of Somerville, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvement in Edge-Burnishing Ma chines, which. will, in connection with the accompanying drawings, be hereinafter fully described, and specifically defined in the appended claims.

This invention has for its object certain improvements in that class of edgeburnishing machines wherein the rubbing-tool is rapidly vibrated to a limited extent while in contact with the surface to be burnished, and it will be hereinafter more particularly described and claimed.

In the accompanying drawings, Figure 1 is a side elevationof a machine embodying my invention. Fig. 2 is a top or plan view of that portion of Fig. 1 shown at the left hand of the driving-pulley. Fig. 3 is an elevation taken at the left of Figs. 1 and 2. Fig. 4 is a horizontal section taken on line a: m, Fig. 1. Fig. 5 is a horizontal section taken as on line WV W, Fig. 3. v

In said views, A represents the frame adapted to receive and support the operative parts, and to be secured to a stand, bench, or other suitable support. A short arbor, a, is journaled in the bearings b b of said frame, a driving-pulley, a, being secured on said arbor, as also the hand or balance wheel d, said wheel being secured in place by nut e, and the arbor being held from lineal displacement by said nut and the collar f. Two pitmen, g g, are mounted on wrist-pins j j of arbor a, and at their outer ends are respectively pivoted on wrist-pins h h of arms ti, said arm 1' being rigidly secured on the inner end of rock-shaft is, while arm 6 is secured by set-screw tto the short arm 8 of collar 1), which is loosely mounted on said rock-shaft 74; between the journal-bearings Z Z of said arbor, said bearing Z being united to frame A by rib m.

Upon the front end of rock-shaft k I secure the fore-part iron a, whose end o is the counterpart of the surface to be burnished, and I secure to the curved depending arm 2 of sleeve 19, bya pivotal connection, 3 the shankiron 10, whose end face, ac, is of the desired form. The upper end of said iron w is adjust-- ably secured by set-screw z to said arm 2, so that the lower end of 10 may be adjusted in its relation to iron at. ally secured. at4.- to the outer journal-bearing, Z, and is adj ustably secured by set-screw 5 to said bearing Z, so that it may be adjusted in its relative proximity to irons a and w. Said finger-rest, in its lower portion, is formed trough-like to receive or overlie iron 10, and is of a width to allow the requisite limited lateral vibration of the iron w.

The wrist-pins j j are clearly shown in Fig. 5, being arranged with their axes out of line with the axis of arbor a, and so that they constitute cranks arranged at one hundred and eighty degrees relatively to each otherthat is, are exactly opposite each other-therefore when arbor a is rotated by a belt on its pulley c the arms t t" will simultaneously approach and recede from each. other, and hence the irons u to will be vibrated in opposite directions, they being shown in Fig. 3 as at their arbor a would reverse the relative positions of said arms 5 t" and irons u w, such movement resulting from the described throws of wristpins j j and arms 72 i, rock-shaft 7t, and loose sleeve 1), to which said arms are respectively secured, which shaft and sleeve respectively perform the functions of rock-shafts by im parting to irons u and to their described vibratory movement.

By thus arranging two burnishing-tools adapted to vibrate in opposite directions the usual tremor or vibration resulting from the rapid reciprocation of a single iron is avoided, thereby effecting a better finish of the edge, as the less tremor of the machine the more perfectly can the work be performed; besides the paralyzing effect of such tremor upon the hands and arms of the operator is avoided. Besides this, the time required for reversing a double-ended iron is saved, as both my irons are always ready for use, and it is only necessary to change the shoe-edge from one to the other.

The advantages of the described adjustment of iron to and rest 3 relatively to iron at are obvious, and need not be described.

A finger-rest, 3, is pivot-v ICO I am aware that two vibrating irons have chine; but they were arranged tovil'irate in the same plane, instead of being in ditt'erent planes-that is, one behind the otherand' were adapted to act simultaneously upon the edge, and hence extended a greater distance along the shoe-edge than mine do, and there fore in working upon those parts ot" the edge which curve vertically, or relatively to the plane of the sole, such irons tended to cross the line of the sole next the upper, and hence to mar and injure the same.

In practice I prefer to give to wrist'pin j threesixteenths of an inch throw, and to wrist-pin j one-half that amount of throw, and hence iron 10, by its greater length, will have about tivothirds the vibratory action of iron at, which is requisite by reason of the greater vertical curve at the shank of the shoe than at the fore part, and the consequent tendency of the shank-iron to cross the curved line (next the upper) of the sole edge when the iron vibrates, as it does, in a right line.

I claim as my invention- 1. In an edge-burnishing machine, the com bination of a finger-rest and two burnishingirons arranged to simultaneously vibrate in opposite directions, but singly operative, in planes one behind the other, and eat-hiormed with an operative face adapted to burnish a portion of the sole unlike the other, and each constantly in position to co-operate at the will of the operator with said rest, whereby either of said tools may at will be conjoiutli employed with said rest without adjustment in relation thereto, substantially as specified.

2. In a burnisl'ting-machine, two burnishing ironsarranged to simultaneously vibrate in opposite directions, but singly operative, in planes one behind the other, combined with means, substantially as described, to adjust one of said irons toward or from the other.'

whereby its plane of vibration may be varied relatively to that of the other, substantially as specified.

In an edge'burnishing machine, the combination of two burnishing-tools arranged to simultaneously vibrate in opposite directions, but singly operative, in planes one behind the other, and a finger-rest in permanent co-operative relation to both, one of said tools and said rest being capable of adjustment toward or from the other tool, substantially as specitied.

In an edge-burnishing machine, two burnishing-tools formed with different operative faces, each adapted to burnish a portion of the sole unlike the other, and arranged to simultaneously vibrate in opposite directions, but singly operative, in planes one behind the other, combined with means, substantially as described, to impart to said tools a differentiated extentot' vibratory movement, substantially as specified.

5. In an edge-burnishing machine, the combination of two luirnisl'ting-irons arranged to simultaneously vibrate in opposite directions, but singly operative, in planes one behind the other, and each formed with an operative face adapted to burnish a portion of the sole unlike the other, and each constantly in position for use at the selection of the operator, substantially as specified.

6. In an edge-burnishing machine, the combination of arbor a, having the crank-like wrist-pins jj, pitmen g g, arms 2' 1, rockshat't 7.2, and sleeve p, burnishing-irons aw, and finger-rest 3, all combined to operate substantially as specified.

' ROBERT ASHE.

Witnesses:

THOMAS XV. PORTER, EUGENE HUMPHREY. 

